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Echo Dots store a wealth of data, even after you reset them

63 点作者 billyharris将近 4 年前

4 条评论

jedberg将近 4 年前
People like to tear apart Echos because of the privacy fear a lot of people have around them. But in this case, I&#x27;m sure many devices have the same problem. It&#x27;s just a matter of not wiping the NAND memory and instead just invalidating pages. I&#x27;ll bet you could get a bunch of Wifi and Netflix credentials by buying up used TVs too (another place where people have privacy fears).<p>Apple at least gets this right by encrypting everything in memory and then just rotating the key (and I think Android does this now too?). But that is complicated and expensive.<p>I guess those of us super concerned with privacy either shouldn&#x27;t sell these devices used, or get a powerful magnet that can cause bit flips (or not buy these in the first place, but good luck living in a modern world without buying a device with NAND memory in it)!
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Syonyk将近 4 年前
Let me help with some metrics about &quot;things&quot; you can install in your house:<p>- However bad you think the security on them might be at some level, it&#x27;s worse. A &quot;factory reset&quot; won&#x27;t reliably clear data, the devices can be tricked into leaking all sorts of stuff, etc.<p>- No matter what the company selling them says, if it has hardware of some variety, Chekhov&#x27;s Gun applies - at some point, that hardware <i>will</i> be used.<p>- You will be disappointed by the supported hardware life in terms of software updates. It will seem like someone has just gotten bored with updating it and doesn&#x27;t care about the ewaste they&#x27;re generating. That &quot;last supported firmware&quot; will eventually either have a massive security issue discovered (Western Digital is a recent example) or will talk to APIs that simply stop working at some point (I believe some Samsung &quot;Smart Fridges&quot; suffered this death).<p>There&#x27;s no good reason to install this sort of stuff in a modern house if you care the slightest bit about privacy.
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admax88q将近 4 年前
Would have been a better design to encrypt the storage on the device and just wipe the key on factory reset.
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0xdeadb00f将近 4 年前
Direct link to paper discussed in the article; <a href="https:&#x2F;&#x2F;dl.acm.org&#x2F;doi&#x2F;pdf&#x2F;10.1145&#x2F;3448300.3467820" rel="nofollow">https:&#x2F;&#x2F;dl.acm.org&#x2F;doi&#x2F;pdf&#x2F;10.1145&#x2F;3448300.3467820</a>